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<script>
    /* 
    需求：
        去除数组1[1,2,3,4,5]与数组2[1,3,5,7,9]中共同的元素
     */
     let array1 = [1, 2, 3, 4, 5];
        let array2 = [1, 3, 5, 7, 9];
        for (let i = 0; i < array1.length; i++) {
            for (let j = 0; j < array2.length; j++) {
                if (array1[i] == array2[j]) {
                    array1.splice(i, 1);
                    array2.splice(j, 1);
                }
            }
        }
        let array =array1.concat(array2);
        console.log(array);
        array1.slice(array2);
        console.log(array1);
        console.log(array2);


               //let array =array2.indexOf(array1[i]);
        /* if(array!=-1){
           array1.splice(i,1);
           array2.splice(array,1);
           i--;
       }
 }
   console.log(array1);
   console.log(array2); */
</script>
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